Magnolia bark extract contains mostly the biphenol neolignans Magnolol and Honokiol, which are effective in reducing anxiety and lowering cortisol levels in the blood as well as stimulating natural glucocorticoid production. Magnolia bark extract is normally used at a dosage of 250-500 mg when it is very pure. Side effects of Magnolia bark extract taken in the proper amount are minimal, and there are many additional uses such as supporting fresh breath and lack of seizures. 3 Item(s)
tl;dr: The human eye can physiologically detect up to 1000 frames per second. The average human, tasked with detecting what framerate he/she is looking at, can accurately guess up to around 150 fps. That is, they can see the difference in framerates all the way to 150 fps. Phew.
The fact is that the human eye perceives the typical cinema film motion as being fluid at about 18fps, because of its blurring. If you could see your moving hand very clear and crisp, then your eye needed to make more snapshots of it to make it look fluid. If you had a movie with 50 very sharp and crisp images per second, your eye would make out lots of details from time to time and you had the feeling, that the movie is stuttering.